1937389 has 2 divisors, whose sum is σ = 1937390. Its totient is φ = 1937388.

The previous prime is 1937363. The next prime is 1937401. The reversal of 1937389 is 9837391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1525225 + 412164 = 1235^2 + 642^2 .

It is a cyclic number.

It is not a de Polignac number, because 1937389 - 2⁷ = 1937261 is a prime.

It is a super-2 number, since 2×1937389² = 7506952274642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1937329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 968694 + 968695.

It is an arithmetic number, because the mean of its divisors is an integer number (968695).

2^1937389 is an apocalyptic number.

It is an amenable number.

1937389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1937389 is an equidigital number, since it uses as much as digits as its factorization.

1937389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 40.

The square root of 1937389 is about 1391.9012177594. The cubic root of 1937389 is about 124.6633930464.

The spelling of 1937389 in words is "one million, nine hundred thirty-seven thousand, three hundred eighty-nine".